The JBX42077 30-meter LC/APC to SC/UPC duplex singlemode fiber patch cable represents a professional-grade solution for critical network infrastructure deployments. Designed to meet stringent telecommunications and data center standards, this cable combines superior optical performance with robust construction for reliable long-term operation. **Optical Performance & Specifications:** Featuring 9/125 singlemode fiber with G.657.A1 classification, this cable delivers exceptional optical characteristics. The insertion loss of ≤0.35dB (typical 0.15dB) and return loss of ≥20dB ensure minimal signal degradation. Testing per ANSI/TIA/EIA-455-171-A standards confirms attenuation specifications of 0.25 dB/km at 1310 nm or 0.35 dB/km at 1550 nm, supporting both C-band and L-band transmission windows. **Construction & Design:** The 1.8mm diameter yellow OFNR-rated jacket provides excellent durability and riser compatibility for building-wide installations. The duplex configuration with Type A to B crossover polarity supports full-duplex bidirectional communication, essential for simultaneous transmit/receive operations. **Compliance & Standards:** TAA compliant and RoHS certified per EU directive 2002/95/EC, this cable meets government procurement requirements and environmental regulations. The LC/APC connectors offer 25dB return loss, while SC/UPC connectors provide industry-standard interfaces. **Applications:** Ideal for data centers, telecommunications facilities, network backbone installations, and enterprise-grade fiber infrastructure. The 30-meter length accommodates medium-distance building connections and structured cabling systems. **Ordering & Support:** Available in custom lengths for specific installation requirements. Ships from multiple US locations (Danville, CA; Fort Worth, TX; Beaufort, SC) with free standard shipping on orders exceeding $99. Backed by a comprehensive 90-day limited warranty and standard testing documentation. This professional fiber patch cable ensures reliable optical signal transmission for mission-critical applications demanding superior performance and durability.